# Sunset Prediction vs Celeris

The clearest difference is update cadence: Sunset Prediction at daily against Celeris's every 2 weeks. Celeris's advantage is device support (4 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Sunset Prediction sells 2 in-app purchases, starting at $2.99 per 7 days and Celeris sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sunset Prediction ships an update daily, Celeris every 2 weeks. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sunset Prediction | Celeris |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 weeks |
| Size | 6 MB | 85 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Nicola Eusebi](https://appshunter.io/developer/737311863) | [Stefan Engel](https://appshunter.io/developer/893179878) |

## What reviewers say

### Sunset Prediction

[App page](https://appshunter.io/ios/app/sunset-prediction/id6777125304)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $2.99 | per 7 days |
| Yearly Pro | $14.99 | per year |


### Celeris

[App page](https://appshunter.io/ios/app/celeris-photo-planner/id6795455170)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $8.99 | one-time |


## Frequently asked questions

### Is Sunset Prediction free?

Sunset Prediction is free to download, with in-app purchases available.

### Is Celeris free?

Celeris is free to download, with in-app purchases available.

### Do Sunset Prediction or Celeris have ads?

Neither Sunset Prediction nor Celeris shows ads.

### Which is updated more often, Sunset Prediction or Celeris?

Sunset Prediction ships an update daily, and Celeris every 2 weeks. Most recently, Sunset Prediction was updated on October 28, 2026 and Celeris on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*